99777368 has 8 divisors (see below), whose sum is σ = 187082580. Its totient is φ = 49888680.

The previous prime is 99777367. The next prime is 99777389. The reversal of 99777368 is 86377799.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99777367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6236078 + ... + 6236093.

Almost surely, 2^99777368 is an apocalyptic number.

It is an amenable number.

99777368 is a deficient number, since it is larger than the sum of its proper divisors (87305212).

99777368 is a wasteful number, since it uses less digits than its factorization.

99777368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472177 (or 12472173 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 56.

The square root of 99777368 is about 9988.8621974677. The cubic root of 99777368 is about 463.8141720203.

The spelling of 99777368 in words is "ninety-nine million, seven hundred seventy-seven thousand, three hundred sixty-eight".